| 摘要 |
The present invention relates to an apparatus assembly for aiding in growing trees having straight trunks comprising a tubular metal pipe or conduit; a removable enclosing device engaged with the tubular metal pipe or conduit; an optional removable tapered stopper engaged with the tubular metal pipe or conduit, and optionally a means for connecting the tubular metal pipe or conduit to a tree. The present invention further relates to a method for making the tree pipe or conduit assembly.
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